bash 如果字符串变量包含通配符，如何检入 shell 脚本？
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时间：2020-09-18 05:15:28 来源:igfitidea点击:
How to check in shell script if string variable contains a wildcard?
提问by user52028778
I'm trying to check if string contains any wildcards. Here is my failing attempt:
我正在尝试检查字符串是否包含任何通配符。这是我失败的尝试：
#!/bin/bash
WILDCARDS='* . ? ! ] ['
a="foo*bar"
for x in $REJECTED_WILDCARDS
do
if [[ "$a" == *"$x"* ]]
then
echo "It's there!";
fi
done
Any suggestions?
有什么建议？
回答by Fritz G. Mehner
Slightly shorter and without a loop:
略短且没有循环：
if [ "$a" != "${a//[\[\]|.? +*]/}" ] ; then
echo "wildcard found"
fi
The parameter substitution deletes all wildcards. The strings are than no longer equal.
参数替换删除所有通配符。字符串不再相等。
回答by iruvar
Set wildcards into a bash array, like so
将通配符设置为 bash 数组，就像这样
wildcards=( '*' '.' '?' '|' ']' '[' )
Then
然后
a="foo*bar"
for wildcard in "${wildcards[@]}";
do
if [[ $a == *"${wildcard}"* ]];
then
echo 'yes';
fi;
done
